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3 years ago

How does the shape of a molecule affect its function?

Chemistry

1 answer:

sesenic [268]3 years ago

7 0

B. the shape of a molecule determines its properties and interactions

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What is the physical state of fluorine at room temperature?

WITCHER [35]

The physical state of fluorine at room temperature is a gas, a pale yellow in colour

6 0

4 years ago

Given the following reaction:

igor_vitrenko [27]

Answer : 21.12 g

explanation :

- A limiting reactant is the substance that is totally consumed when the chemical reaction is complete and the reaction cannot continue without it.

- This is a limiting reactant problem because the amount of product (CO2) formed is limited by this substance (either O2 or C3H8).

- We can predict the limiting reactant by calculating number of mole for all reactants;

n (C3H8) = mass/ molar mass = 7/[(12 × 3)+(1 ×8)] = 0.16 mol

n (O2) = mass/ molar mass = 98/(16 × 2) = 3 mol

But we know from this balanced equation that for the reaction to continue, for (n) of propane there must be (5n) of oxygen. Clearly we have more oxygen than required for the reaction to continue as

[ 3 O2 mol > (0.16 propane mol × 5) . Hence, the limiting reactant is propane.

- Using cross multiplication,

0.16 mol propane → 1 mol propane

? → 3 mol CO2

So (n) of CO2 produced = 0.16 × 3 / 1 = 0.48 mol ,

And mass of CO2 produced = n × molar mass = 0.48 × [12 + (16 ×2)] = 21.12 g..

7 0

3 years ago

How many molecules are there in 45.0 grams of CH ?

Sonbull [250]

Answer:

There are 1.8021 ⋅ 1024 molecules of CH4 in 48 grams of CH4. To answer this question, you must understand how to convert grams of a molecule into the number of molecules. To do this, you have to utilize the concepts of moles and molar mass. A mole is just a unit of measurement. Avogadro's number is equal to 6.022 ⋅1023 molecules/mole. i think please dont complain to me if its wrong im sorry

Explanation:

8 0

3 years ago

Given the following information:

Katyanochek1 [597]

Step by Step Explanation

From the question,
the dimensions of the tank are;

L = 30 cm, way =0.075m and H = 15 cm

The density of water is given as
$D = 1g {cm}^{ - 3}$

The unit of density given in the question means that the mass of the water is in grams and the volume should also be in
${cm}^{3}$

To find the volume of the water, we first convert the units of dimensions given in inches and metres to centimetres

$1 inch = 2.54 cm$

This implies that ,

$H=15 inches=15×2.54cm=38.1cm$

Also,

$100cm=1m$

This implies that,
$w= \frac{0.075}{100 } = 7.5 \times {10}^{ - 4} cm$

Now, the volume of water in the tank can hold, can be found from the relation;

$V=L\times W\times H$

This implies that,

$v = 30cm \times (7.5 \times {10}^{ - 4} )cm \times 38.1cm$

$v = 0.857 {cm}^{3} \: to \: 3 \: d.p$

Finally, we can calculate the mass of the water from the relation given;

$D=\frac{M}{V}$

This in implies that

$1g {cm}^{ - 3} = \frac{m}{0.857 {cm}^{3} }$
$m = 1g {cm}^{ - 3} \times 0.857 {cm}^{3}$
$m = 0.857g$

Hence the fish tank can hold 0.857g water.

4 0

3 years ago

Read 2 more answers

Is cobalt 60 more dangerous than bananas ( potassium 40) and why ?

maxonik [38]

Answer:

To the best of my knowledge, it is because of the amount of gamma rays is given off.

Explanation:

While both are isotopes, Potassium 40 gives off fewer gamma rays compared to Cobalt 60. Potassium 40 isn't really harmful to humans, but Cobalt 60 (I believe) is used in chemotherapy.

7 0

4 years ago